Couldn't resist the temptation given PatDavid latest work. Equivalent scripts may exist, but it was faster to roll my own. Basically you have two visible layers in image (the top two visible layers) and the script creates a new image with the frames of an animation that passes from one image to the other.

Using the well-known picture of a noted Gimper, and a recently published picture of an offspring of his:



Script at the usual place

Nice one ofnuts.

I'm unable to properly experiment this interesting filter.
Just to see the effect I took:
1-the following image

2-duplicated the layer then applied lens distortion, getting this layer

3-run the filter with defaults
Result OK.
But if I change the "mode", this is misinterpreted:
a) setting Multiply simply repeat 3 times the BG
b) setting Divide applies Multiply
c) setting Dodge applies Difference
IMHO this is due to the use of the parameter "mode" as an absolute number which does not correspond to the official layer modes.
If I change the statement:
over.mode=mode
with
over.mode=MODES[mode]
it works properly.
Am I wrong?

Yes, bug Thanks for reporting. Fixed, see version 0.1 on Sourceforge.

OK, thanks for fixing.

Cool!